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spinlock functions return error no

use_iouring
YuQing 2025-07-08 17:25:37 +08:00
parent a6dc24e2f3
commit 62a29b55a5
1 changed files with 28 additions and 5 deletions
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33
src/spinlock.c
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@ -25,6 +25,17 @@
#include "logger.h"
#include "spinlock.h"
#ifdef OS_LINUX
static inline int fc_futex(int *ptr, int op, int val)
{
if (FUTEX(ptr, op, val) == 0) {
return 0;
} else {
return errno != 0 ? errno : EBUSY;
}
}
#endif
int fc_spinlock_init(FCSpinlock *lock, int *cond)
{
#ifdef OS_LINUX
@ -47,7 +58,7 @@ void fc_spinlock_destroy(FCSpinlock *lock)
int fc_spinlock_lock(FCSpinlock *lock)
{
#ifdef OS_LINUX
return FUTEX(&lock->mutex, FUTEX_LOCK_PI_PRIVATE, 0);
return fc_futex(&lock->mutex, FUTEX_LOCK_PI_PRIVATE, 0);
#else
return pthread_mutex_lock(&lock->lcp.lock);
#endif
@ -56,7 +67,7 @@ int fc_spinlock_lock(FCSpinlock *lock)
int fc_spinlock_trylock(FCSpinlock *lock)
{
#ifdef OS_LINUX
return FUTEX(&lock->mutex, FUTEX_TRYLOCK_PI_PRIVATE, 0);
return fc_futex(&lock->mutex, FUTEX_TRYLOCK_PI_PRIVATE, 0);
#else
return pthread_mutex_trylock(&lock->lcp.lock);
#endif
@ -65,7 +76,7 @@ int fc_spinlock_trylock(FCSpinlock *lock)
int fc_spinlock_unlock(FCSpinlock *lock)
{
#ifdef OS_LINUX
return FUTEX(&lock->mutex, FUTEX_UNLOCK_PI_PRIVATE, 0);
return fc_futex(&lock->mutex, FUTEX_UNLOCK_PI_PRIVATE, 0);
#else
return pthread_mutex_unlock(&lock->lcp.lock);
#endif
@ -74,7 +85,15 @@ int fc_spinlock_unlock(FCSpinlock *lock)
int fc_spinlock_wait(FCSpinlock *lock, const int expected)
{
#ifdef OS_LINUX
return FUTEX(lock->cond, FUTEX_WAIT_PRIVATE, expected);
int result;
int lock_ret;
if ((result=fc_futex(&lock->mutex, FUTEX_UNLOCK_PI_PRIVATE, 0)) != 0) {
return result;
}
result = fc_futex(lock->cond, FUTEX_WAIT_PRIVATE, expected);
lock_ret = fc_futex(&lock->mutex, FUTEX_LOCK_PI_PRIVATE, 0);
return result == 0 ? lock_ret : result;
#else
return pthread_cond_wait(&lock->lcp.cond, &lock->lcp.lock);
#endif
@ -83,7 +102,11 @@ int fc_spinlock_wait(FCSpinlock *lock, const int expected)
int fc_spinlock_wake_ex(FCSpinlock *lock, const int count)
{
#ifdef OS_LINUX
return FUTEX(lock->cond, FUTEX_WAKE_PRIVATE, count);
if (FUTEX(lock->cond, FUTEX_WAKE_PRIVATE, count) >= 0) {
return 0;
} else {
return errno != 0 ? errno : EBUSY;
}
#else
if (count == 1) {
return pthread_cond_signal(&lock->lcp.cond);